Four prong skewer



FIG. 1: is a perspective view of the four prong skewer of the present invention;

FIG. 2 is a front and back view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a four prong skewer, as shown and described. 